Toán Lớp 9: C=(√x/3+√x+x+9/9-x)(3√x+1/x-3√x-1/√x) (x>),x khác 9)
a) rg
b_) tìm x sao cho C<-1
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Toán Lớp 9: C=(√x/3+√x+x+9/9-x)(3√x+1/x-3√x-1/√x) (x>),x khác 9)
a) rg
b_) tìm x sao cho C<-1
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